Differential - Pinion Oil Seals Leak
51/02/96/US12/13/96
SUBJECT
PRIDE - Front and Rear Differential Pinion Oil Seal Replacement
MODEL AFFECTED VEHICLES
Range Rover 4.0/4.6 LP 1995
LH
LJ
LD
DETAIL
Some differential pinion oil seals can leak on 1995 Range Rovers. The following procedure will replace the seals with an improved design seal to eliminate leakage.
The diagnostic steps and repair procedures detailed were developed as an element of the Land Rover Way Operation PRIDE. This TIB provides a library location for PRIDE information within the Land Rover North America technical literature system.
ACTION REQUIRED
Upon customer complaint for the symptoms outlined perform the specified repairs.
PARTS INFORMATION
STC3124 - Seal Kit (qty. 2)
^ Input Shaft Seal (qty. 1)
^ Input Flange (qty. 1)
^ Nyloc(R) Nut (qty. 1)
NY606041L - Nyloc(R) Nuts (qty. 8)
Locally sourced items:
GL-4 or GL-5 axle fluid
WARRANTY
Normal warranty procedures and policies apply.
COMP. CODE
4S1N
4S5N
SRO
51.20.01 - Time: 0.55 hr.
Rear Pinion Seal Replacement
54.10.20 - Time: 0.55 hr.
Front Pinion Seal Replacement
PROCEDURE
Perform the diagnostic procedures and repairs outlined for both front and rear differential pinion oil seals.
NOTE: Use only tool LRT-51-009 for the installation of pinion seals. Use of any other tool may result in damage to the seal.
Removal
1. Remove four nuts and bolts securing driveshaft to differential.
2. Release shaft and tie aside (figure 1).
3. Hold differential flange with tool # LRT-51-003 (figure 2).
4. Remove flange nut
5. Remove flange.
6. Remove oil seal with a suitable tool.
Inspection
1.Inspect seal locating bore and remove any sharp edges that may damage new oil seal.
2. Inspect front and rear transfer box output seals for leakage. Replace transfer box seals if leakage is present
3. Check breather for proper operation.
Installation
1. Ensure that all mating surfaces are clean.
2. Lubricate oil seal with axle oil.
3. Using tool # LRT-51-009, install seal in differential.
4. Install flange as follows:
^ Position flange.
^ Hold flange with tool LRT-51-003 (figure 2).
^ Install new nut and tighten to 135 Nm (100 lbf. ft.)
5. Using a dial indicator check the drive flange.
Maximum permissible run out
0.010 mm (0.004 inches)
Face run out
0.010 mm (0.004 inches)
NOTE: Run out and face run out may be optimized by removing the drive flange and rotating it through 180 degrees prior to refitting.
6. Reinstall driveshaft with bolts and new nuts. Tighten to 48 Nm. (35 lbf. ft.).
7. Replenish axle oil (GL4, GL5).
8. Mark nose of differentials with marker supplied.
9. Road test vehicle and check for leaks.